{"product_id":"20nm-carboxyl-carboxyl-peg3000-sh-gold-nanoparticles","title":"20nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles","description":"\u003cp\u003eFor assay teams comparing nanoparticle options for nanoparticle conjugation and protein labeling, the 20 nm carboxyl-PEG gold nanoparticles format keeps selection focused on particle material, size, shape and chemistry.\u003c\/p\u003e\n\u003cp\u003eGold nanoparticles are widely used as plasmonic labels and conjugation scaffolds because their optical response, surface chemistry and particle size can be matched to assay, imaging or sensor formats. The listed absorption maximum of 524 nm can help compare this size with related gold nanoparticle options.\u003c\/p\u003e\n\u003cp\u003eThe carboxyl-functionalized surface is used for covalent bioconjugation strategies, including protein or ligand coupling where the product data supports conjugation workflows. It provides a chemically addressable nanoparticle surface for preparing custom probes.\u003c\/p\u003e\n\u003cp\u003eThe supplied description emphasizes controlled size distribution and defined particle morphology. Those details matter when comparing related nanoparticle products for optical response, conjugation behavior or assay consistency.\u003c\/p\u003e\n\u003cp\u003eThe application profile includes nanoparticle conjugation and protein labeling. These terms reflect the supported scientific workflows for this listing and help scientists compare related products by use case, not by material alone.\u003c\/p\u003e\n\u003cp\u003eThis size range is often selected as a balance between particle number, optical response and biomolecular surface area.\u003c\/p\u003e\n\u003cp\u003eFor gold nanoparticle workflows, compare standard, stabilized, reactant-free, endotoxin-free and functionalized versions according to the application. The same size can behave differently depending on the surface chemistry and formulation.\u003c\/p\u003e\n\u003cp\u003eFor procurement and product selection, compare it with related nanoparticles by particle size, surface chemistry, formulation and listed application rather than treating all nanoparticles as interchangeable.\u003c\/p\u003e\n\u003ch3\u003eApplication areas\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNanoparticle conjugation with supported proteins, ligands or biomolecules\u003c\/li\u003e\n  \u003cli\u003eProtein labeling and protein-nanoparticle conjugate preparation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cytodiagnostics","offers":[{"title":"0.5 ml","offer_id":58053239177561,"sku":"CGC3K-20-25","price":255.0,"currency_code":"EUR","in_stock":true},{"title":"1 ml","offer_id":58053239210329,"sku":"CGC3K-20-50","price":445.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/1011\/0553\/files\/30nm-functionalized-gold-nanoparticles_c16865c7-6b7a-4d9e-a681-a285ab2257be.jpg?v=1778675340","url":"https:\/\/absource.de\/products\/20nm-carboxyl-carboxyl-peg3000-sh-gold-nanoparticles","provider":"Absource Diagnostics","version":"1.0","type":"link"}